Finding the Fourth Proportional to 2,111.77, 3,163.80 and 1,185.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.77 : 3,163.80 = 1,185.94 : x
2. Step 2: Convert to fraction form
   2,111.77/3,163.80 = 1,185.94/x
3. Step 3: Cross multiply
   2,111.77x = 3,163.80 × 1,185.94
4. Step 4: Simplify right side
   2,111.77x = 3,752,061.15
5. Step 5: Solve for x
   x = 3,752,061.15/2,111.77
6. Step 6: Final answer
   x = 1,776.74